Anatomy of Cymbidium sinense(Andr.)Willd.
墨兰的解剖学研究

The vegetative and propagative organs of Cymbidium sinense were studied by paraffin method and observed under scanning elect ron microscope. The results show that leaf surfaces of Cymbidium sin ense are covered with cuticle. The stomata with tetracyclic type are found t o distribute in the abaxial epidermis. The mesophyll is not differentiated into spongy and palisade tissues, but mesophyll near midrib in tip and middle parts o f leaf is often lengthened to appear as palisade-liked tissue. Vascular bundles of leaf with parallel venation are collateral bundles. Vascular boundles in pseu dobulb are scattered in ground tissue. In cross section view, from outer to inne r part, root includes velamen, cortex, and vascular cylinder. Basic structure of each part of perianth is similar to each other and is composed of epidermis, gr ound tissue and vascule bundle. Epidermis of lip and column are glandular epider mis, with a stylar canal in column. Tricarpous pistil has one-locular ovary with parietal placentation. Tetrads have no ornamentation in appearance. A capsule f ruit.